I am wondering - is this supposed to be more for rabbits?
It seems very high, which would be good for a rabbit because it can actually stand upright in it, but its a waste of space for piggies..
and not only the run, the house aswell - nice and high, but a piggy doesnt need that.
If you would want to get that, I would build a second floor into the house/hutch-compartement, and for the run I would buy some houses with ramps that they can hop on top of, so that the upwards space isnt completely wasted.
Looks good as such though
Ramp is a bit steep, but thats nothing you cant solve by putting a brick underneath it and carpet on the ramp itself.
Can you shut the house off? as in, close it off from the run completely?
Also, is this supposed to be a summer-house for your piggies, or are you planning on keeping the piggies in there all year?
If it is planned to be their winter residence aswell, I would do some modifications with regard to insulation and keeping drafts out.